<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/126814>126814</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            Segment fault on Windows
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            new issue
      </td>
    </tr>

    <tr>
      <th>Assignees</th>
      <td>
      </td>
    </tr>

    <tr>
      <th>Reporter</th>
      <td>
          angelog0
      </td>
    </tr>
</table>

<pre>
    I installed `flang` on Windows with MSYS2/UCRT64 and trying to build a simple program produced the following:

```
$ flang earth_gravit.f90 -o earth_gravit-flang.out
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.
Exception Code: 0xC0000005
 #0 0x00007ff62ca72038 (C:\msys64\ucrt64\bin\flang.exe+0x7f2038)
 #1 0x00007ff62ca4076c (C:\msys64\ucrt64\bin\flang.exe+0x7c076c)
 #2 0x00007ff62ca40157 (C:\msys64\ucrt64\bin\flang.exe+0x7c0157)
 #3 0x00007ff62ca499e0 (C:\msys64\ucrt64\bin\flang.exe+0x7c99e0)
 #4 0x00007ff62dbb34f4 (C:\msys64\ucrt64\bin\flang.exe+0x19334f4)
 #5 0x00007ff62cf3b7a7 (C:\msys64\ucrt64\bin\flang.exe+0xcbb7a7)
 #6 0x00007ff62cac4cfc (C:\msys64\ucrt64\bin\flang.exe+0x844cfc)
 #7 0x00007ff62cac539d (C:\msys64\ucrt64\bin\flang.exe+0x84539d)
 #8 0x00007ff62cf3c434 (C:\msys64\ucrt64\bin\flang.exe+0xcbc434)
 #9 0x00007ff62cf3b6c2 (C:\msys64\ucrt64\bin\flang.exe+0xcbb6c2)
#10 0x00007ff62cab59ee (C:\msys64\ucrt64\bin\flang.exe+0x8359ee)
#11 0x00007ff62cab876d (C:\msys64\ucrt64\bin\flang.exe+0x83876d)
#12 0x00007ff62cab81ea (C:\msys64\ucrt64\bin\flang.exe+0x8381ea)
#13 0x00007ff62cab813e (C:\msys64\ucrt64\bin\flang.exe+0x83813e)
#14 0x00007ffe108654bc (C:\msys64\ucrt64\bin\libwinpthread-1.dll+0x54bc)
#15 0x00007ff62cab808f (C:\msys64\ucrt64\bin\flang.exe+0x83808f)
#16 0x00007ff62cab84de (C:\msys64\ucrt64\bin\flang.exe+0x8384de)
#17 0x00007ff62cab85b0 (C:\msys64\ucrt64\bin\flang.exe+0x8385b0)
#18 0x00007ffda1b4e6e8 (C:\msys64\ucrt64\bin\libLLVM-19.dll+0x17be6e8)
#19 0x00007ffda2c862b6 (C:\msys64\ucrt64\bin\libLLVM-19.dll+0x28f62b6)
#20 0x00007ffe238737b0 (C:\WINDOWS\System32\ucrtbase.dll+0x37b0)
#21 0x00007ffe242de8d7 (C:\WINDOWS\System32\KERNEL32.DLL+0x2e8d7)
#22 0x00007ffe2637bf2c (C:\WINDOWS\SYSTEM32\ntdll.dll+0xbbf2c)
flang: error: flang frontend command failed due to signal (use -v to see invocation)
flang version 19.1.7
Target: x86_64-w64-windows-gnu
Thread model: posix
InstalledDir: C:/msys64/ucrt64/bin
flang: note: diagnostic msg:
********************

PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
flang: note: diagnostic msg: C:/msys64/tmp/earth_gravit-fc2427
flang: note: diagnostic msg: C:/msys64/tmp/earth_gravit-fc2427.sh
flang: note: diagnostic msg:

********************
Segmentation fault
```

Trying for a second time the same command worked and produced a working executable.

All the needed files in the tarball

[earth_gravit.tar.gz](https://github.com/user-attachments/files/18759573/earth_gravit.tar.gz)
</pre>
<img width="1" height="1" alt="" src="http://email.email.llvm.org/o/eJysl8tu2zwahq-G3hA2KOq88EJx7P8Pxm2K2J2gq4KHTzKnlGiQVOLM1Q8oO5HjDqaNO4ECKwzfh9-BTF4y51TTAcxReoPS2wnr_c7YOesa0KYhE27ky_wOq855pjVIjDJSa9Y1KCPYdPhRddI8O_ys_A5_2nzbUERXXxcP2yzBrJPY2xfVNdgbzHulJWbYqXavAe-taSxrw6fsBUjsd4Bro7V5Vl2D4gqR4cnI6SEVogke1sbArN99byx7Un5WlwRPzbux6TBtZnqPSPVlvaw2S-x63iqPGeZ9gy3sjfUhrJ33exeWoytEV43yu57PhGkRXWn99Pox3VvzLxAe0ZVyrgeH6GrIT3VC9xKG6IVlboc5Ez-8ZQJmiFTLg4C9V6bDCyMBxRUmhwUZvlJEKoxoTDA5hJ_zus6oYDklcYERLRYhqHTRuheXJShd9ML64YWrDqWLY4ZwAERvyCGvgwzR8gSN3kMTkmfi41ARZCOUXkKjNL8GGqX5CI0voGUJ5ApokI3Q5BwqOY-TOvkwNCrjoBup6btQ65jn7OP5Cx5kIzR7n79IRP3xThVJkI3Q_AKaxqW8AhpkI7S4SF8k8ceLKniQjdDysqaZoNfUNBP0CA2b_-JI8bQE-Hj6cZCN0IsjxYs8u6KmcZCNUHoJjYBdA42AjdD4J2h8TfpBNkLPjhREpMjShP_OPtWKP6tu73cWmJxGM6n1gA_yEZ5eRkyK-pqISVGP0OwSmsirypDIszLkl9CUf_zPVREH2Qg9O1mSRTyBDH7nX4BWfL3-56dpVL6VNcp5EI_o8hxNRZFRnl2HpkUdxG9oenbKgMZFHufvSvF49_n2_nGD0sXmxXloY3pahjMHb9QgGpHROTKhEgqZ_wr5j-XD5-U6prPb9foYaFCNTHrOzOKc11T8d-a3zXb5aWB2Xmr9FiMPkiPwaH3iCoO1xoaXoyGprek8dBIL07bBF9RMBbckewgmI3gspsOqvQM8fRrGALDqnoxgwR-c4fETWBcsQ1TOolmOSLVltgEfVjsU2fcsmT6H76PzmjZdH6YMBwy3RoIOE_fGqQMi1d2rcbtVQ7iLo9U59Z2uTn2nq9D3s_w64we7IhVrOuO8Erh1r7aM_sEzuLqTJau222rxN97-vcSr-_X6_vHu8194dbdebvD2fhi--foXflh-uX_YHpf-YmFvjQDnQGJneisA0cIhWg5ujDlnhGIeJLZ9h52wau_fJljAOpQbJGb-yPt1vj9VzLd7RFfv3aagCc3_z7iZ2_12Q_64JxtoWuj8sBVxzXrtL703qbZHK18bG1w8CBPsvWqP3texFt42_7OxP0KROznaezaMBgAcQPSecT04ZESqSuuB0QFIkLhWGhxW3TDmmeVM61OS6c075--ZnTX_RuktosX_8PG9Aztl3jOxC0kG7z6sgegqKvK0TPP4ogWvZFpO5DyWZVyyCcyjPC7jKE7KbLKblwkNnlMUwdBEKZMsojXLy4hnkRA8nag5JTQlNIoojYsom_EiKVIq0qwosrIWKUoItEzpWbhgzIxtJsPVYh7RrIiSiWYctBvuZZR28IyH3yJKwzXNzodbCe8bhxKilfNuxHjlNcxPLT128-yqNumtnl9_6zlF9zSn_wkAAP__Dz8mlA">